JPS5447561A - Analog/digital interface circuit - Google Patents
Analog/digital interface circuitInfo
- Publication number
- JPS5447561A JPS5447561A JP11417277A JP11417277A JPS5447561A JP S5447561 A JPS5447561 A JP S5447561A JP 11417277 A JP11417277 A JP 11417277A JP 11417277 A JP11417277 A JP 11417277A JP S5447561 A JPS5447561 A JP S5447561A
- Authority
- JP
- Japan
- Prior art keywords
- clock
- analog
- circuit
- interface circuit
- supplied
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE: To obtain an economical interface circuit by supplying the clock obtained by dividing the multiplying clock to the analog part and supplying the clock which becomes toothless at the frame synchronous pulse position to the digital part respectively.
CONSTITUTION: The clock of frequency f2 to be supplied to multiplying part 14 is n-divided through frame synchronizing circuit 15, and the clock of f2/n frequency is applied to analog interface part 12a of interface circuit 12 as well as to inhibition gate 16. The inhibition signal of gate 16 uses signal (a) at the position of the frame synchronous pulse. Accordingly, clock f1 containing the fixed and toothless frame syncronous information is supplied to part 12b of circuit 12 as well as to digital circuit 13. While the clock freturing a fixed pulse duration at all times is supplied to part 12a. Thus, the steady analog signal process is carried out, obtaining a highly economical and practical interface circuit
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11417277A JPS5447561A (en) | 1977-09-22 | 1977-09-22 | Analog/digital interface circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11417277A JPS5447561A (en) | 1977-09-22 | 1977-09-22 | Analog/digital interface circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5447561A true JPS5447561A (en) | 1979-04-14 |
Family
ID=14630969
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11417277A Pending JPS5447561A (en) | 1977-09-22 | 1977-09-22 | Analog/digital interface circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5447561A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57129020A (en) * | 1981-02-04 | 1982-08-10 | Hitachi Ltd | Signal processing circuit |
-
1977
- 1977-09-22 JP JP11417277A patent/JPS5447561A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57129020A (en) * | 1981-02-04 | 1982-08-10 | Hitachi Ltd | Signal processing circuit |
JPS6343929B2 (en) * | 1981-02-04 | 1988-09-01 | Hitachi Seisakusho Kk |
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